JPH06350542A - Alarm spread proofing and transfer system - Google Patents

Abstract

PURPOSE:To prevent the generation of an alarm to be spread to a downstream because of the fault of an upstream device or a transmission line at a repeater enabling multistage connection. CONSTITUTION:Connected step number information to be a reference is transmitted from a transmitter, and the repeater separates the information by using a separation circuit 3 and recognizes the position of the present device (its order from the transmitter.) On the other hand, '1' is added to the separated connected step number information by an adder circuit 5, this output and one output of a synchronizing detection circuit 2 are inputted to an inserting circuit 6 and transmitted to the downstream device, and the connected step number information made different for each repeater is provided. The output of an input signal interruption detection circuit 1, the other output of the synchronizing detection circuit 2 and the output of a time setting circuit 4 are inputted to an alarm mask circuit 7 and during set time, the output of the alarm is masked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm coping system in a communication device, and more particularly to an alarm propagation system for a relay device which is used for long-distance transmission and can be connected in multiple stages, and an exchange system. The present invention relates to an alarm transfer method for a package equipped with various functional circuits that are removed during operation.

[0002]

2. Description of the Related Art First, a conventional alarm ripple prevention system is shown in FIG.
An input signal disconnection detection circuit 1 that inputs the main signal to the relay device, a synchronization detection circuit 2 that inputs the main signal,
It is composed of a time setting circuit 4 and an alarm mask circuit 7 which receives the output of the input signal loss detection circuit 1, the output of the synchronization detection circuit 2 and the output of the time setting circuit 4.

Next, the operation will be described. The input signal disconnection detection circuit 1 which receives the main signal detects whether or not the signal is normally input, and outputs the result. The synchronization detection circuit 2 that inputs the main signal detects the synchronization of the input signal and outputs a signal that establishes synchronization and a signal that indicates a synchronous or asynchronous state. The time setting circuit 4 sets an arbitrary determined time and outputs it to the alarm mask circuit 7. The output of the input signal loss detection circuit 1 and the output of the synchronization detection circuit 2,
The alarm mask circuit 7 that receives the output of the time setting circuit 4 masks the output of the input alarm information during the set time. Generally, such time setting is generally performed by F / W (firmware).

As a document of this type of prior art,
JP-A-63-31249, JP-A-60-1838
34 and JP-A-59-4295.

Next, the conventional alarm transfer system is shown in FIG.
And as shown in (b), the first package (hereinafter referred to as PKG) 31 and the second PKG 3 are provided in the host device 101.
2, a first PKG 31 and a second PKG 31 for transmitting a signal.
Back wiring board to connect KG32 (hereinafter B
33), the first PKG 31 and the second PKG
A first PKG 31 having a signal line 201 connecting 32
Then, this signal line 201 is connected to the ground (hereinafter referred to as GND), and in the second PKG 32, the signal line 201 is pulled up to + 5V via the resistor 35, and the second PKG 3 is connected.
2 is a signal line 201 and an insertion circuit 12 for inputting the main signal.
And a lower circuit 102 connected to the upper apparatus 101 via a transmission path, a synchronizing circuit 13 having a signal from the upper apparatus as an input, and a separation circuit 1 having an output of the synchronizing circuit 13 as an input.
4 and an alarm mask circuit 15 to which the output of the separation circuit 14 and the alarm information 26 are input.

Next, the operation will be described. First PKG3
When the first and second PKGs 32 are normally mounted on the BWB 33, the signal line 201 is G in the first PKG 31.
It is at GND level because it is connected to ND,
This is recognized as a normal state. Second PKG3
The inserting circuit 12 in 2 inserts this GND level into the main signal and transfers it to the lower device 102. In the lower device 102, the synchronization circuit 13 establishes synchronization of the input signal and outputs the signal. The separation circuit 14 separates the contents (mounting information) of the signal line 201 transmitted from the higher-level device 101, and it can be known that the first PKG 31 and the second PKG 32 are normally mounted in the higher-level device 101. it can. On the other hand, when the first PKG 31 is not mounted, the signal line 201 in the second PKG 32 is pulled up via the resistor 35, and thus changes to + 5V level. Second PKG
The inserting circuit 12 in 32 inserts this + 5V level into the main signal and transfers it to the lower device 102. In the lower device 102, the synchronization circuit 13 establishes the synchronization of the input signal and outputs it. The separation circuit 14 separates the contents (mounting information) of the signal line 201 transferred from the higher-level device 101, and can know that the first PKG 31 has been removed by the higher-level device 101. The lower device 102 is an alarm mask circuit 15 to which the output of the separation circuit 14 is input, and masks the alarm generated in the alarm information 26 due to the removal of the first PKG 31 of the upper device 101.

As a document of this type of prior art,
JP-A-58-168370, JP-A- 64-722
No. 16 and JP-A No. 1-150393 can be cited.

[0008]

In the conventional relay device in the conventional alarm ripple prevention system, when the transmission line clock is cut off, the internal clock for sending the AIS (advanced information system) signal to the downstream device. There was a switch to. When this switching occurs, a transmission line alarm is generated in the downstream device. In this conventional alarm spillover prevention method, since the masking time is constant regardless of the position of the own device in the relay network as seen from the transmitting device, the number of switchings increases in the device located downstream, so sufficient alarming is performed. There is a drawback that the mask cannot be used. Also, if it is F / W
However, there is a drawback in that it is not efficient because several types of F / Ws must be prepared.

In the conventional alarm transfer system, the first P
If the KG31 is removed, the alarm can be transferred to the lower-level device 102, but if the second PKG32 is removed, there is no transfer means. Further, this has a drawback that the lower device 102 cannot mask an alarm caused by the removal of the PKG of the upper device 101.

Therefore, the present invention aims to improve the above-mentioned drawbacks of the prior art and mask an alarm in a communication device.

[0011]

The present invention adopts the following means in order to solve the above problems.

1. In a relay device, which is located between a transmitter and a receiver and relays a signal, an input signal disconnection detection circuit having a main signal as an input, a synchronization detection circuit having a main signal as an input, and the synchronization detection circuit A separation circuit having one output as an input, an addition circuit having the output of the separation circuit as an input, and a time setting circuit having the output of the separation circuit as an input,
An alarm mask circuit that receives the output of the input signal disconnection detection circuit, the other output of the synchronization detection circuit, and the output of the time setting circuit, and one output of the synchronization detection circuit and the output of the addition circuit Alarm spread prevention method with insertion circuit.

2. In a PKG having an ejector using the principle of leverage at the bottom of the PKG as a means for removing the PKG mounted on the host device, the ejector and the PKG are removed.
A signal from the higher-level device is input to a mechanical connection means, an insertion circuit for inputting information and a main signal obtained from the mechanical connection means, and a lower-level device connected to the higher-level device via a transmission path. An alarm transfer system having a synchronization circuit, a separation circuit for inputting the output of the synchronization circuit, and an alarm mask circuit for inputting the output of the separation circuit and alarm information.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the alarm spread prevention system of the present invention will be described with reference to FIG.

In a relay device, which is located between a transmitter and a receiver and relays a signal, an input signal loss detection circuit 1 for inputting a main signal, a synchronization detection circuit 2 for inputting a main signal, Separation circuit 3 having one output of the synchronization detection circuit 2 as an input, and addition circuit 5 having an output of the separation circuit 3 as an input
And a time setting circuit 4 which receives the output of the separation circuit 3 as an input,
An alarm mask circuit 7 that receives the output of the input signal loss detection circuit 1, the other output of the synchronization detection circuit 2 and the output of the time setting circuit 4, and one output of the synchronization detection circuit 2 and the output of the addition circuit 5 are provided. The input circuit 6 is provided as an input.

Next, the operation will be described. The input signal disconnection detection circuit 1 receives the main signal as an input, detects the disconnection state of the input signal, and outputs the result. The synchronization detection circuit 2 that inputs the main signal establishes synchronization. The separation circuit 3 that inputs the signal with which synchronization is established separates the connection stage number information included in the main signal. As the connection stage number information, reference information (provisionally "1") is inserted from the transmission device into the main signal and transferred to the relay device. The separated connection stage number information “1” is added to the adder circuit 5
Is input to, and "1" is added and output as "2". The time setting circuit 4, which receives the connection stage number information “1”, sets the alarm mask time based on the input connection stage number information and outputs the result to the alarm mask circuit 7. The alarm mask circuit 7 inputs the output of the input signal disconnection detection circuit 1, the other output of the synchronization detection circuit 2 and the output of the time setting circuit 4, and masks the alarm output during the set time. Adder circuit 5
The insertion circuit 6 which receives the output of the above and one output of the synchronization detection circuit 2 updates and inserts the connection stage number information and transmits it to the downstream relay device. The downstream relay device performs the operation just described and outputs the connection stage number information to the downstream device as "3". In this way, by transmitting the information in which “1” is added to the sequential connection stage number information to the downstream device, it is possible to recognize which position each relay device is located from the transmission device, and the alarm mask is determined by the position. You can set the time.

Next, one embodiment of the alarm transfer system of the present invention will be described with reference to FIGS. 2 (a) and 2 (b).

The PKG2 installed in the host device 101
In the PKG21 having the ejector 22 using the principle of leverage on the lower side of the PKG21 as the removing means of 1,
Mechanical connection means 11 between the ejector 22 and the PKG 21,
That is, the pin 23 and the PKG mounted on the PKG 21
21 and the spring mechanism 28 included in the ejector 22 that contacts the pin 23, one end point is connected to the spring mechanism 28, and the other end point is connected to the pattern 25. A pattern 24 on the PKG 21 connected to GND, and a resistor 2 having one terminal connected to the other end of the pattern 25 and the other terminal connected to + 5V
7, an insertion circuit 12 that receives the other of the main signal and the pattern 25, a synchronization circuit 13 that inputs a signal from the higher-level device 101 to the lower-level device 102 that is connected to the higher-level device 101 via a transmission line, The separation circuit 14 receives the output of the circuit 13 and the alarm mask circuit 15 receives the output of the separation circuit 14 and the alarm information 26.

Next, the operation will be described. Host device 10
The ejector 22 provided in the PKG 21 of No. 1 is a PKG
21 is normally mounted, the pattern 23 and the spring mechanism 28 are in contact with each other so that the pattern 24 and the pattern 25 are in contact with each other.
Is in conduction. The other end of the pattern 24 is GND
, The pattern 25 is also at the same level, and the GND level is input to the insertion circuit 12. Insertion circuit 1 for inputting the main signal and the level (mounting information) of pattern 25
2 inserts this mounting information into the main signal to insert the lower device 102.
Transfer to. The synchronization circuit 13 of the lower device 102 establishes the synchronization of the input signal and outputs it. The separation circuit 14 inputs the signal after the synchronization is established, and separates the mounting information transferred from the higher-level device 101.
The alarm that occurred is not masked because 1 is installed normally. Next, when removing the PKG 21 of the host device 101, put a finger or the like on the upper portion of the ejector 22 and rotate it in the direction of the arrow. At this time, since the ejector 22 rotates about the fulcrum 29, the pin 23 and the spring mechanism 28 are not in contact with each other and the pattern 24 and the pattern 25 are not electrically connected to each other. Since the pattern 25 is connected to + 5V via the resistor 27, the level changes from GND to + 5V. The insertion circuit 12 transfers this mounting information to the lower-level device 102 as already described. The lower-level device 102 also separates the mounting information and outputs it to the alarm mask circuit 15, as already described. In the alarm mask circuit 15, P in the upper device 101
Recognizing that the KG removal has occurred, the alarm generated in the alarm information 26 due to the removal of the PKG 21 of the host device 101 is masked.

[0020]

As described above, the present invention employs a synchronous circuit, a separation circuit, an insertion circuit and an alarm mask circuit in the configuration for masking an alarm in a communication device, and has the following effects.

The alarm spread prevention system of the present invention transmits the connection stage number information to the relay device, and sequentially transmits it while adding "1", so that the relay device can be positioned at any position relative to the transmitter device. You can let them know if there is. Further, since the alarm is masked by using this information to set the time according to the position from the transmitting device, it is possible to mask the unnecessary spread of the alarm.

The alarm transfer system according to the present invention is implemented by the PK on the host device side.
The ejector of G and the pattern on the PKG are connected by a mechanical connecting means, and the connection / disconnection of this is converted to information and transmitted to the lower device, so that the PKG to be removed transfers the mounting information to the lower device. I was able to do. As a result, even if the PKG closest to the transmission path side is removed, B
The effect that the mounting information can be transferred to the lower device before being removed from the WB is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an alarm spread prevention system of the present invention.

FIG. 2 is a block diagram of an embodiment of an alarm transfer system of the present invention.

FIG. 3 is a block diagram of a conventional warning transmission prevention system.

FIG. 4 is a block diagram of a conventional alarm transfer method.

[Explanation of symbols]

 1 Input signal disconnection detection circuit 2 Synchronization detection circuit 3 Separation circuit 4 Time setting circuit 5 Addition circuit 6 Insertion circuit 7 Alarm mask circuit 11 Mechanical connection means 12 Insertion circuit 13 Synchronous circuit 14 Separation circuit 15 Alarm mask circuit 21 Package 22 Ejector 23 Pin 24 pattern 25 pattern 26 alarm information 27 resistance 28 spring mechanism 29 fulcrum 31 first package 32 second package 33 back wiring board 35 resistance 101 upper device 102 lower device 201 signal line

Claims (2)

[Claims] 1. A relay device, which is located between a transmitter and a receiver and relays and transmits a signal, includes an input signal disconnection detection circuit that receives a main signal, and a synchronization detection circuit that receives the main signal. A separation circuit having one output of the synchronization detection circuit as an input, an adder circuit having an output of the separation circuit as an input, and a time setting circuit having an output of the separation circuit as an input,
An alarm mask circuit that receives the output of the input signal disconnection detection circuit, the other output of the synchronization detection circuit, and the output of the time setting circuit, and one output of the synchronization detection circuit and the output of the addition circuit An alarm ripple prevention method having an insertion circuit for 2. A package having an ejector using the principle of leverage at the bottom of the package as a means for removing the package mounted on the host device, wherein a mechanical connecting means between the ejector and the package and the mechanical connecting means are provided. An insertion circuit for inputting the information and the main signal obtained from
To a lower device connected to the upper device via a transmission path, a synchronizing circuit for inputting a signal from the upper device, a separating circuit for inputting an output of the synchronizing circuit, and an output of the separating circuit and alarm information are inputted. And an alarm transfer system characterized by having an alarm mask circuit.